US3509530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration switches
Assignee: ZF International UK Ltd
•
Filing: 1967-06-13
•
Granted: 1970-04-28
•
Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Eric Bernard Parkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:32
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/445; H; H01; H01H; H01H35/00; H01H35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1256134A
Cited
US1288128A
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US1901554A
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AT140896B
Cited
US2106643A
Cited
GB613343A
Cited
US2671207A
Cited
US2704360A
Cited
US2778896A
Cited
US2831176A
Cited
US3372386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |